I'm curious at what voltages GDDR5 chips REALLY work...Hynix datasheets
mention 1.35, 1.5 and 1.55V, yet I see 0.8-1.1 range everywhere (wattman, GPU-Z,
hwinfo...)
This is the memory controller you are seeing afaik.
...and that means what? Memory voltage is memory controller voltage + some other voltage?